package com.szrt.day20170413.ch02;


import org.junit.Test;

public class ChildTest {
	
	
	@Test
	public void playPhoneTest() throws Exception {
		Child child = new Child();
		child.playPhone();
		
		int sum  =child.add(10, 20,30);
		System.out.println(sum);
	}

}
